A common condition in which the ass crack and crotch becomes overly moist, sweaty, and stinky from one or all of the following:
- sweating on a hot day
- not bathing enough
- long day of work, sports, play
- incomplete wipe due to rush or laziness

The crack will often feel squishy, wet, unpleasant, and itchy. It is recommended to take a bath with soap to sanitize the condition.

Example:

After a long day of moving furniture. "I need to go home and take a shower before I get swamp ass."

An unfortunate condition in which the taint (the often hair-bespeckled, flrshy space between balls and ass) is wallowing in the depths of a vile, festering, putrid poo swamp. A generally uncomfortable, unwipable ass. The only cure is gold bond.

the nasty feeling when your butt crack is sweaty, causing your underwear and pants to stick, or an occasional itching feeling. Ussually caused by elevated tempatures or humidity while working or excessive walking.

Ryan's been walking around in this heat all day and now he complains of haveing a bad case of swampass.

A build up of sweat and schmancter usually forming on the under carriage in the crease between the berry bag and the inner thigh. After aging, "swamp ass" can put out a distinct and distasteful odor. Swamp ass is caused by extended periods of physical activity. Obesity can contribute to the severity.

After several hours of worm wrestling and sword fighting, Jason and Eric both had terrible cases of swamp ass.

when your asscrack/grundel area is so sweaty it basically becomes a boggy swamp. very humid and producing unbelievable discomfort, this condition is generally worse among the fat and lardy. however, in sub-tropical climate locales, i.e. southern louisiana or mississippi, swampass can strike anyone, at anytime. the only relief is to either strip naked and head for a fire hydrant or go home and peel your loins off and drape a cold, wet towel over your nether-regions.

earl walked outside, went to the mailbox, and even at 7:15 in the a.m., fell victim to a putrid variety of swampass....